Question 1

What is the population of Saint-Denis?

Accepted Answer

The commune of Saint-Denis has 156,149 inhabitants per the INSEE census.

Question 2

Are there natural risks in Saint-Denis?

Accepted Answer

Yes, Saint-Denis is exposed to 8 natural risk(s): Cyclone / Ouragan (vent), Eruption volcanique, Feu de forêt, Inondation, Mouvement de terrain, Phénomène lié à l'atmosphère, Séisme, Transport de marchandises dangereuses. Source: Géorisques / GASPAR.

Question 3

What is the energy performance of homes in Saint-Denis?

Accepted Answer

Out of 34 ADEME EPCs available in Saint-Denis, the most common label is D. 12% are rated A or B.

Question 4

What is the crime rate in Saint-Denis?

Accepted Answer

In 2025, the crime rate in Saint-Denis was 30.2 offences per 1,000 inhabitants (burglaries, theft, violence, vandalism). Source: SSMSI / French Ministry of the Interior.

Question 5

Is the tap water safe to drink in Saint-Denis?

Accepted Answer

Tap water in Saint-Denis is non-compliant on some parameters. Source: ARS / Hub'eau. (10412 analyses over 12 months) Exceedances were observed for: bactériologie.

Question 6

What is the air quality in Saint-Denis?

Accepted Answer

According to LCSQA stations (5-year mean) in Saint-Denis: PM2.5 : 4.7 µg/m³, NO₂ : 7.4 µg/m³, PM10 : 12.9 µg/m³. Source: LCSQA / Géod'air.